Title :
Scanning photoluminescence technique to determine the phase of the grating at the facets of gain-coupled DFB´s
Author :
Adams, David M. ; Cassidy, Daniel T. ; Bruce, Douglas M.
Author_Institution :
Adv. Technol. Lab., Nortel Technol., Ottawa, Ont., Canada
fDate :
7/1/1996 12:00:00 AM
Abstract :
We demonstrate a rapid, nondestructive scanning photoluminescence (PL) technique for the determination of the phase of the grating at the cleaved or coated facets of “in-phase” gain-coupled distributed feedback lasers. The measured phases of the grating at the cleaved facets of a bar of lasers are found to be consistent with experimental measurements of laser performance
Keywords :
diffraction gratings; distributed feedback lasers; laser variables measurement; optical couplers; optical scanners; photoluminescence; semiconductor lasers; cleaved facets; coated facets; gain-coupled DFB laser facets; grating phase; in-phase gain-coupled distributed feedback lasers; laser performance; nondestructive scanning photoluminescence; scanning photoluminescence technique; Distributed feedback devices; Etching; Gratings; Helium; Intensity modulation; Laser feedback; Laser modes; Phase measurement; Photoluminescence; Quantum well lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
